Detachable modular sofa

A detachable modular sofa, comprising a recliner (1) and a sofa (2) detachably connected to the recliner (1);

• characterized in that
• the recliner (1) comprises a recliner backrest (11), a recliner side (12), a recliner bottom (13) and a recliner forepart (14);
• between the recliner bottom (13) and the recliner side (12), a first bottom adjusting bracket (1A) is provided;
• the first bottom adjusting bracket (1A) comprises a first side fixing piece (1A1) for connecting the recliner side (12) and a first bottom fixing piece (1A3) for connecting the recliner bottom (13), one end of the first side fixing piece (1A1) adjacent to the recliner backrest (11) and one end of the first bottom fixing piece (1A3) adjacent to the recliner backrest (11) are rotatably connected by a first straight support piece (1A2);
• one end of the first side fixing piece (1A1) adjacent to the recliner forepart (14) and one end of the first bottom fixing piece (1A3) adjacent to the recliner forepart (14) are rotatably connected by a first diagonal support piece (1A4);
• the first diagonal support piece (1A4) has a greater length than the first straight support piece (1A2);
• when an articulation joint of the first side fixing piece (1A1) with the first diagonal support piece (1A4) is denoted as point A, and an articulation joint of the first bottom fixing piece (1A3) with the first straight support piece (1A2) is denoted as point B, a reset spring (1A5) is further provided between two points A and B;
• the sofa (2) comprises a sofa base comprising a sofa backrest (21), a sofa side (22) and a sofa bottom (23);
• and a lift assembly comprising a lift base (25) and a lift bottom (26) provided on the lift base (25), a second bottom adjusting bracket (2A) configured for lifting the lift bottom (26) is mounted between the lift bottom (26) and the lift base (25);
• the second bottom adjusting bracket (2A) comprises a base fixing piece (2A1) configured for connecting the lift base (25) and a second bottom fixing piece (2A3) configured for connecting the lift bottom (26);
• one end of the base fixing piece (2A1) adjacent to the sofa backrest (21) and one end of the second bottom fixing piece (2A3) adjacent to the sofa backrest (21) are rotatably connected by a linkage mechanism (2A2);
• one end of the base fixing piece (2A1) adjacent to the sofa forepart (24) and one end of the second bottom fixing piece (2A3) adjacent to the sofa forepart (24) are rotatably connected by a second diagonal support piece (2A4);
• the second diagonal support piece (2A4) has a greater length than the linkage mechanism (2A2);
• the linkage mechanism (2A2) comprises a first link (2A2-1) hinged at one end to the base fixing piece (2A1), a second link (2A2-2) and a third link (2A2-3) hinged at one end to another end of the first link (2A2-1);
• the second link (2A2-2) consists of a short rod (2A2-2-1) and a long rod (2A2-2-2) integrally connected to the short rod (2A2-2-1) forming an angle of 120 to 150°;
• the third link (2A2-3) is hinged at one end to an articulation of the short rod (2A2-2-1) and the long rod (2A2-2-2) and hinged at another end to the base fixing piece (2A1);
• when an articulation point of the first link (2A2-1) with the base fixing piece (2A1) is denoted as point C, an articulation point of the second link (2A2-2) with the first link (2A2-1) is denoted as point D, an articulation point of the third link (2A2-3) with the second link (2A2-2) is denoted as point E, and an articulation point of the third link (2A2-3) with the base fixing piece (2A1) is denoted as point F, following relations are satisfied:
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